分液板式冷凝器的热力性能评价

doi:10.12052/gdutxb.180144

Abstract

Abstract: "Liquid-separation condensation" theory is applied for performance enhancement in the plate condenser, with the physical and mathematical models built. Seven liquid-separation plate condensers having the same heat transfer area are proposed for heat transfer coefficient and pressure drop comparison. Their performances are evaluated by employing the penalty factor (PF) and exergy destruction. Results show that the higher the liquid-vapor separation efficiency, the better is the performance of the liquid-separation plate condensers. Compared with the conventional plate condenser with the same heat transfer area, the liquid-separation plate condenser has 14.6% lower PF and 2.6~6.1% smaller exergy destruction when the liquid-vapor separation efficiency is 100% and the mass flux is in the range of 0.08~0.12 kg/s. Moreover, when the mass flux is 0.1 kg/s, the penalty factor (PF) of liquid-separation plate condenser is lower with the vapor quality ranging between 0.3~0.75, and the exergy destruction of liquid-separation plate condenser is superior only when the vapor quality is higher than 0.45.

Key words: liquid-vapor separation plate condenser, heat transfer coefficient, pressure drop, penalty factor, exergy destruction

CLC Number:

TB657.5

Zhu Kang-da, Chen Ying, Chen Jian-yong, Luo Xiang-long, Yao yuan, Liang Zhi-ying. Thermodynamic Performance Evaluation of Liquid-vapor Separation Plate Condenser[J].Journal of Guangdong University of Technology, 2019, 36(05): 48-55,70.

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